Editing Category:CIS-12

[[File:CIS-12.png|300px|thumb|right|Idle/Stand-by -> Traffic burst]]
'''CIS-12''' (Also known as MS5, FIRE, AT-3004D, or AT-3104D) is a 12-tone PSK Russian military multi-channel modem. It features scrambled voice/ data-communication at a maximum data rate of 4800 bps. Each subcarrier transmits at 120 Bd. There is 200 Hz of spacing between each subcarrier.

This waveform is transmitted by the AT-3004D and the newer AT-3104D military modems in use by the Russian Military. These modems were designed to have many different devices plugged into them to form the modem’s input – most often teleprinters unique to the different military services and civilian agencies that use them, and also, vocoders and speech encipherment systems, but all are transmitted in the same fashion.

A characteristic trait of this signal is the unmodulated pilot tone at 3300 Hz.

Multiple stations use this format


Logs:

[https://drive.google.com/file/d/13otAAVSvQO0b9sPHi4TM8Z8q4pPzxpEC/view?usp=sharing CIS-12 testing, very first appereance of actual data use] - 19.09.26

[https://www.youtube.com/watch?v=0R7ZcDfnVIY Navy CIS-12 file data testing] ([https://drive.google.com/file/d/1tsH5qnnYLbzj-sUvRDnq31sTIQsm7UQ2/view?usp=sharing audio version here]) - 23.09.26 1235z

== How to use ==
You only can be given this modem if you are a trustable Russian Millitary participant.
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[[Category:Modems]] [[Category:Russian military]] [[Category:Russian Military]]